Javascript date
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Format a local date/time
Example 1
Running
1.date('H:m:s \m \i\s \m\o\n\t\h', 1062402400);
Could return
1.'09:09:40 m is month'
Example 2
Running
1.date('F j, Y, g:i a', 1062462400);
Could return
1.'September 2, 2003, 2:26 am'
function date ( format, timestamp ) {
// Format a local date/time
//
// version: 901.1301
// discuss at: http://phpjs.org/functions/date
// + original by: Carlos R. L. Rodrigues (http://www.jsfromhell.com)
// + parts by: Peter-Paul Koch (http://www.quirksmode.org/js/beat.html)
// + improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + improved by: MeEtc (http://yass.meetcweb.com)
// + improved by: Brad Touesnard
// + improved by: Tim Wiel
// + improved by: Bryan Elliott
// + improved by: Brett Zamir
// + improved by: David Randall
// * example 1: date('H:m:s \\m \\i\\s \\m\\o\\n\\t\\h', 1062402400);
// * returns 1: '09:09:40 m is month'
// * example 2: date('F j, Y, g:i a', 1062462400);
// * returns 2: 'September 2, 2003, 2:26 am'
// * example 3: date('Y W o', 1062462400);
// * returns 3: '2003 36 2003'
// * example 4: x = date('Y m d', (new Date()).getTime()/1000); // 2009 01 09
// * example 4: (x+'').length == 10
// * returns 4: true
var a, jsdate=(
(typeof(timestamp) == 'undefined') ? new Date() : // Not provided
(typeof(timestamp) == 'number') ? new Date(timestamp*1000) : // UNIX timestamp
new Date(timestamp) // Javascript Date()
);
var pad = function(n, c){
if( (n = n + "").length < c ) {
return new Array(++c - n.length).join("0") + n;
} else {
return n;
}
};
var txt_weekdays = ["Sunday","Monday","Tuesday","Wednesday",
"Thursday","Friday","Saturday"];
var txt_ordin = {1:"st",2:"nd",3:"rd",21:"st",22:"nd",23:"rd",31:"st"};
var txt_months = ["", "January", "February", "March", "April",
"May", "June", "July", "August", "September", "October", "November",
"December"];
var f = {
// Day
d: function(){
return pad(f.j(), 2);
},
D: function(){
var t = f.l();
return t.substr(0,3);
},
j: function(){
return jsdate.getDate();
},
l: function(){
return txt_weekdays[f.w()];
},
N: function(){
return f.w() + 1;
},
S: function(){
return txt_ordin[f.j()] ? txt_ordin[f.j()] : 'th';
},
w: function(){
return jsdate.getDay();
},
z: function(){
return (jsdate - new Date(jsdate.getFullYear() + "/1/1")) / 864e5 >> 0;
},
// Week
W: function(){
var a = f.z(), b = 364 + f.L() - a;
var nd2, nd = (new Date(jsdate.getFullYear() + "/1/1").getDay() || 7) - 1;
if(b <= 2 && ((jsdate.getDay() || 7) - 1) <= 2 - b){
return 1;
} else{
if(a <= 2 && nd >= 4 && a >= (6 - nd)){
nd2 = new Date(jsdate.getFullYear() - 1 + "/12/31");
return date("W", Math.round(nd2.getTime()/1000));
} else{
return (1 + (nd <= 3 ? ((a + nd) / 7) : (a - (7 - nd)) / 7) >> 0);
}
}
},
// Month
F: function(){
return txt_months[f.n()];
},
m: function(){
return pad(f.n(), 2);
},
M: function(){
t = f.F(); return t.substr(0,3);
},
n: function(){
return jsdate.getMonth() + 1;
},
t: function(){
var n;
if( (n = jsdate.getMonth() + 1) == 2 ){
return 28 + f.L();
} else{
if( n & 1 && n < 8 || !(n & 1) && n > 7 ){
return 31;
} else{
return 30;
}
}
},
// Year
L: function(){
var y = f.Y();
return (!(y & 3) && (y % 1e2 || !(y % 4e2))) ? 1 : 0;
},
o: function(){
if (f.n() === 12 && f.W() === 1) {
return jsdate.getFullYear()+1;
}
if (f.n() === 1 && f.W() >= 52) {
return jsdate.getFullYear()-1;
}
return jsdate.getFullYear();
},
Y: function(){
return jsdate.getFullYear();
},
y: function(){
return (jsdate.getFullYear() + "").slice(2);
},
// Time
a: function(){
return jsdate.getHours() > 11 ? "pm" : "am";
},
A: function(){
return f.a().toUpperCase();
},
B: function(){
// peter paul koch:
var off = (jsdate.getTimezoneOffset() + 60)*60;
var theSeconds = (jsdate.getHours() * 3600) +
(jsdate.getMinutes() * 60) +
jsdate.getSeconds() + off;
var beat = Math.floor(theSeconds/86.4);
if (beat > 1000) beat -= 1000;
if (beat < 0) beat += 1000;
if ((String(beat)).length == 1) beat = "00"+beat;
if ((String(beat)).length == 2) beat = "0"+beat;
return beat;
},
g: function(){
return jsdate.getHours() % 12 || 12;
},
G: function(){
return jsdate.getHours();
},
h: function(){
return pad(f.g(), 2);
},
H: function(){
return pad(jsdate.getHours(), 2);
},
i: function(){
return pad(jsdate.getMinutes(), 2);
},
s: function(){
return pad(jsdate.getSeconds(), 2);
},
u: function(){
return pad(jsdate.getMilliseconds()*1000, 6);
},
// Timezone
//e not supported yet
I: function(){
var DST = (new Date(jsdate.getFullYear(),6,1,0,0,0));
DST = DST.getHours()-DST.getUTCHours();
var ref = jsdate.getHours()-jsdate.getUTCHours();
return ref != DST ? 1 : 0;
},
O: function(){
var t = pad(Math.abs(jsdate.getTimezoneOffset()/60*100), 4);
if (jsdate.getTimezoneOffset() > 0) t = "-" + t; else t = "+" + t;
return t;
},
P: function(){
var O = f.O();
return (O.substr(0, 3) + ":" + O.substr(3, 2));
},
//T not supported yet
Z: function(){
var t = -jsdate.getTimezoneOffset()*60;
return t;
},
// Full Date/Time
c: function(){
return f.Y() + "-" + f.m() + "-" + f.d() + "T" + f.h() + ":" + f.i() + ":" + f.s() + f.P();
},
r: function(){
return f.D()+', '+f.d()+' '+f.M()+' '+f.Y()+' '+f.H()+':'+f.i()+':'+f.s()+' '+f.O();
},
U: function(){
return Math.round(jsdate.getTime()/1000);
}
};
return format.replace(/[\\]?([a-zA-Z])/g, function(t, s){
if( t!=s ){
// escaped
ret = s;
} else if( f[s] ){
// a date function exists
ret = f[s]();
} else{
// nothing special
ret = s;
}
return ret;
});
}
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